Emit debug message when executing extension script.

Allows extension authors to more easily debug problems related to the
sequence of update scripts that are executed.

Discussion: https://postgr.es/m/5636a7534a4833884172fe4369d825b26170b3cc.camel%40j-davis.com
Reviewed-by: Peter Eisentraut, Nathan Bossart

diff --git a/src/backend/commands/extension.c b/src/backend/commands/extension.c
index 7b3aceee119c5ffd7ad4f30c56f8a011eea5c2d9..3db859c3ea379b89fd231df2d4167354b9efb786 100644 (file)
--- a/src/backend/commands/extension.c
+++ b/src/backend/commands/extension.c
@@ -887,6 +887,11 @@ execute_extension_script(Oid extensionOid, ExtensionControlFile *control,
 
        filename = get_extension_script_filename(control, from_version, version);
 
+       if (from_version == NULL)
+               elog(DEBUG1, "executing extension script for \"%s\" version '%s'", control->name, version);
+       else
+               elog(DEBUG1, "executing extension script for \"%s\" update from version '%s' to '%s'", control->name, from_version, version);
+
        /*
         * If installing a trusted extension on behalf of a non-superuser, become
         * the bootstrap superuser.  (This switch will be cleaned up automatically